Aegukka is the national anthem of South Korea.

The 'Tiến Quân Ca', the national anthem of Vietnam, is very important to the people.

She is singing the preschool song.

He joined the demonstration while humming The Internationale.

Our company's song was created to deepen the bond between employees.

He sealed the letter and posted it in the mailbox.

It is important to understand the basis of this problem.

If you use this coupon, you will get a 10% discount.

We need drastic reforms.

This is a fundamental problem.